﻿#region License
//
// Copyright (c) 2008-2012, DoLittle Studios and Komplett ASA
//
// Licensed under the Microsoft Permissive License (Ms-PL), Version 1.1 (the "License")
// With one exception :
//   Commercial libraries that is based partly or fully on Bifrost and is sold commercially, 
//   must obtain a commercial license.
//
// You may not use this file except in compliance with the License.
// You may obtain a copy of the license at 
//
//   http://bifrost.codeplex.com/license
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#endregion

using System.Linq;
using Bifrost.Entities;
using NHibernate;
using global::NHibernate.Linq;


namespace Bifrost.NHibernate
{
	public class EntityContext<T> : IEntityContext<T>
	{
		ISession _session;

		public EntityContext(EntityContextConnection connection)
		{
			_session = connection.SessionFactory.OpenSession();
		}

		public IQueryable<T> Entities 
		{
			get 
			{
                var queryable = _session.Query<T>();
				return queryable;
			}
		}

		public void Attach(T entity)
		{
			_session.SaveOrUpdate(entity);
		}

		public void Insert(T entity)
		{
			_session.Save(entity);
		}

		public void Update(T entity)
		{
			_session.Update(entity);
		}

		public void Delete(T entity)
		{
			_session.Delete(entity);
		}

	    public void Save(T entity)
	    {
	        _session.Save(entity);
	    }

	    public void Commit()
		{
			_session.Flush();
		}

		public void Dispose()
		{
			_session.Flush();
			_session.Close();
			_session = null;
		}
	}
}
